Kids and pets can immediately play on areas immediately after application of this fertilizer. Non-burning, spreadable granules can even be applied near waterways. An Earth-friendly way to green up your lawn, or topdress your flower beds, roses, and vegetable gardens. Sold in 40 pound bags. Do not apply just prior to seeding your lawn. Apply spring and fall at 20 lb per 1,000 sq ft.fall at 20 lb per 1,000 sq ft.